SPACI score report for 1et9 in ASTRAL 1.63:

PDB Entry: 1et9
SPACI score: 0.47
AEROSPACI score: 0.47

Experiment type: XRAY
Resolution: 1.9
R-factor: 0.199
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.484
WCK2 WHAT_CHECK Ramachandran: -1.949
WCK3 WHAT_CHECK Chi angles: 0.609
WCK4 WHAT_CHECK Backbone: 0.466

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).